RE: RPP raw photo processor 64
RE: RPP raw photo processor 64
- Subject: RE: RPP raw photo processor 64
- From: Wayne Bretl <email@hidden>
- Date: Mon, 03 Jun 2013 07:23:10 -0500
I have been following the discussion with fascination, and learning what
software techniques are available.
However, accuracy can go only so far in the case of three-channel sensors,
and an accurate starting process may not be able to mimic a particular film
or sensor if the sensor in use doesn't match that.
An example: two sensors, one with deeper near infrared sensitivity than the
other, plus two black objects, one with near infrared reflectivity greater
than the other.
No profiling of the sensor with low infrared sensitivity will make it
distinguish these two objects the way the sensor with infrared sensitivity
will. If the sensor is blind to something, profiling cannot make it see
that.
The same principal applies to sensing of highly saturated colors by sensors
with narrow bandwidths (like most film). They reach 100% sensor saturation
at a point where the eye does not, and are blind to further increases in the
subject saturation.
Great discussion, guys - keep on!
-----Original Message-----
From: colorsync-users-bounces+waynebretl=email@hidden
[mailto:colorsync-users-bounces+waynebretl=email@hidden] On
Behalf Of Graeme Gill
Sent: Monday, June 03, 2013 6:31 AM
To: ColorSync
Subject: Re: RPP raw photo processor 64
Iliah Borg wrote:
> It is a little bit complicated for high dynamic range scenes with
> light sources (L>100) because of flare; and that flare is not very
predictable.
How is that different from flare in any optical capture system (ie. the eye,
a film camera, etc. etc.) ?
But regardless of whether the aim is to capture HDR, something like OpenEXR
is a format that seems suitable for storing scene image information in a
form that is not output referred, has a firm technical foundation, is not
proprietary, and has a bunch of software around it.
Graeme Gill.
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